$ git clone -n https://src.fedoraproject.org/rpms/Coin3.git /var/lib/mock/f41-build-side-1-2749560-31004/root/chroot_tmpdir/scmroot/Coin3
Cloning into '/var/lib/mock/f41-build-side-1-2749560-31004/root/chroot_tmpdir/scmroot/Coin3'...
$ git fetch origin 19def5c8e3680247e108ebcc978e56d338ad895a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/Coin3
 * [new ref]         19def5c8e3680247e108ebcc978e56d338ad895a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 19def5c Migrate to SPDX license